Lappet-loom.



'PATENTED JULY 14, 1903.

11., LBDOUX. LAPPET LOOM.

APPLICATION FILED MAR. 12, 1903.

2 SHEETS-SHEET 1.

N0 MODEL.

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PATENTED JULY 14, 1903.

H. LEDOUX.

LAPPET LOOM.

APPLICATION FILED MAR. 12, 1903.

2 SHEETS-SHEET 2.

H0 MODEL.

Uw/v/m %QWW Patented July 14, 1903.

Fries.

HECTOR IlEDOUX, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROM TON doKNOW'LES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OFMASSACHUSETTS.

LAPPET=LOOIVL SPECIFICATION forming part of Letters Patent No. 733,490,dated July 14, 1903.

Application filed March 12, 1903.

To all whom it wmy concern:

Be it known that I, HECTOR LEDOUX, a citi- Zen of the United States,residing at Worcesa ter, in the county of Worcester and State ofMassachusetts, have invented certain new and useful Improvements inLappet-Looms, of which the following is a specification.

My invention relates to a lappet-loom, so termed, for weavingjby meansof needles, figtires or designs on the face of the fabric in thewell-known way.

The object of my invention is to improve upon the construction of theneedle-operating mechanism of a lappet-loom as ordinarily made, and moreparticularly to increase the range of movement and the variety ofmovement of the needle-bar carrying the needles transversely of thefabric.

In my improved construction I use two pat- 2o tern-surfaces havingelevations of varying heights and a lever for each pattern-surface, bothlevers connected with a single needlebar having thereon the needleswhich carry the lappet-threads. The movement of either lever or bothlevers by the operation of the pattern-surfaces thereon willcommunicatea longitudinal movement to the needle-barv to place theneedles carrying the lappet warpthreads in varying positions over thesheds of the usual warp-threads and interweave the lappet warp-threadson the surface of the fabric to produce the desired figures or designsin the usual manner in lappet-weaving. The two pattern-surfaces maybemade up or 5 formed of different elevations to produce any desiredfigure by the movement of the needlebar, and one of the pattern-surfacesmay be provided for several successive picks or movements of thepattern-surface with elevations of the same height, so that the lever ofsaid pattern-surface will remain at rest and not be moved by saidpattern-surface, while the other pattern-surface may have elevations ofvarying heights, so that the movement of the 5 needle-bar will begoverned only by the lever of said pattern-surface. When the two patternsurfaces have elevations of varying heights, the two levers of saidpattern-surfaces will act, through the connection to the needlebar,tocommunicate to the needle-bar a move Serial No. 147,393. (No model.)

'ment equal to the combined movements produced' by each of said levers.In order to give an increased movement to the needle bar over thatproduced by the movement of one of the levers, I make a part of theconnection to the needle-bar, one end of which is attached to one of thelevers, flexible, and extend it down, and pass it loosely around apulley on the other lever and then carry it up to form a loop aroundsaid pulley before it passes to and is connected with the needlebar. Themovement of the pulley on the lever in the loop of theconnectionproduces an increased movement of the needle-bar over the movement ofthe lever,as will be well under- 6 stood.

My invention consists in certain novel features of construction of myimprovements.

As my improvements are adapted to be applied to any of the well-knownforms of jac- 7o quard or pattern-chain looms, I have only shown in thedrawings detatched portions of a loom with my improvements thereonsufficient to enable those skilled in the art'to understand theconstruction and operation thereof.

Referring to the drawings, Figure 1 is an end elevation of a loom-frameand lay with my improvements applied thereto. Fig. 2 is,

on an enlarged scale, a perspective View of parts of my improvementsshown in Fig. 1

detached; and Fig. 3 is, on an enlarged scale, a plan view of a portionof the loom-frame and lay and needle-bar and connections detached.

In the accompanying drawings, 1 is the loom-frame; 2, the lay-sword,pivotally supported at its lower end in the usualway.

3 is the lay; 4, the connector to the crankshaft; 5, the crank-shaft,and 6' the bottom shaft. Said crankshaft and bottomshaft are connectedby gears (not shown) in the usual manner.

Supported on the lay and adapted to slide longitudinally in the guides 7thereon is the 5 needle-bar 8, carrying the lappet-thread needles, whichare attached to clamps 9, by which the needles are secured to theneedlebar 8 in the usual way. To one end of the needle-bar 8 is attacheda spring 10, (see Fig. :00

3,) which acts to move the needle-bar to its extreme right-hand positionor to its normal position when not acted on by the mechanism connectedto its other end.

The mechanism for raising and lowering the needle-bar is not shown andmay be of any well-known construction and operation.

All of the above part-s may be of any ordinary and well-knownconstruction.

I will now describe my improvements.

A shaft 11 is mounted at its inner end in a bearing 12, secured to theloom-frame. (See Fig. 2.) Said shaft 11 has fast thereon a collar11 anda ratchet-wheel 13, which is rotated by a pawl 14,111 this instanceconnected with an eccentric 15 on the bottom shaft 6. The revolution ofthe bottom shaft 6 communicates, through the eccentric 15, motion to thepawl 14 to intermittently rotate the ratchet-wheel 13. Also fast on theshaft 11 is a cam 16, forming in this instance the pattern-surface tooperate the lever 17, which is pivoted at one end on a pin 18 in a stand19, fast to the loom side. The lever 17 carries in this instance a plateor surface 17, which extends in the path of and is engaged by the cam orpattern surface 16, and on the end of the lever 17 is pivotally mounteda pulley 21.

Upon the upper part of the loom-frame is secured a stand 22, and inhearings on said stand is mounted a shaft 23, having fast thereon ahand-wheel 24 and a pattern-chain cylinder 25, carying the patternsurface or chain 26, made up of links 26 of different elevations in theusual way. Rotary motion is communicated to the shaft 28 in anywellknown way from some driven part of the loom.

On the stand 22 is pivoted on a pin 27 one end of the lever 28, carryingin this instance a roll 29, which extends over and rests upon thepattern chain or surface 26. To the end of the lever 28 is attached oneend of a connection 30, which extends downwardly and passes looselyaround the pulley 21 on the lever 17 and from said pulley passesupwardly and over a guide-pulley 31 on a stud 32 on a stand 83, securedin this instance to the back side of the lay at the end thereof and isconnected by a wire or link 34 to the end of the needle-bar 8, as shownin Figs 8.

The cam 16 and the pattern chain or surface 26 form in this instance thetwo patternsurfaces hereinbefore referred to, and the lever 17 and thelever 28 are the two levers of said pattern-surfaces.

The flexible connection 80 connects the lever 28 and also the lever 17with the needlebar 8 to move the needle-bar in one direction vlongitudinally and with it the needle trans versely of the fabric, andthe spring 10, attached to the needle'bar 8, acts to draw it in theopposite direction and to hold the levers 17 and 28 in contact withtheir pattern-surfaces.

From the above description, in connection with the drawings, theoperation of my imtern surface or cam 16 will through its lever 17 movethe needle-bar longitudinally, according to the shape of the cam 16, byreason of the engagement of the pulley 21 with the connector 30, and,vice versa, if the shape of the cam 16 is such that the revolution ofsaid cam will not move the lever 17 said'lever will remain at rest andthe needle-bar will be moved longitudinally through the connection 30 bythe lever 28, providedthe pattern-surface 26 acting on said lever haselevations of varying heights. It will thus be seen that thelongitudinal movement of the needle-bar may be governed by the movementof the lever of one pattern-surface only. If both the pattern-surface 26and the cam 16 have elevations thereon of varying heights, the twolevers 17 and 28 will act, through the single con nection 30 to theneedle-bar, to communicate a longitudinal movement to said bar equal tothe combined movements produced by each of the levers. In this way themovement of the needle-bar will be greatly increased over the movementcommunicated to it by one of the pattern-surfaces, and, further, byreason of the connection 80 being loosely looped or passed around thepulley 21 a downward movement of the lever 17 and pulley 21 will producean increased movement of the connection 80 intermediate said pulley 21and the needle-bar, and consequently an increased movement of theneedle-bar. For example, a downward movement of the lever 17 of half aninch will by reason of the loop in the connection 30 produce a downwardmovement of an inch on the connection, and consequently a movement of aninch on the needle-bar.

The advantages of my improvements will be readily understood by thoseskilled in the art.

It will be understood that the details of construction of myimprovements may be varied, if desired, and may be adapted to be appliedto any well-known form of loom for weaving lappet goods. instead of thecam 16 a pattern-surface corresponding to the pattern-surface 26 or anyother well-known style of pattern-surface may be used.

1 preferably use two pattern-surfaces, as hereinbefore described; but,if desired, in weaving some patterns the pattern-surface 26 maybedispensed with and the end of the connection 30 attached in a fixedposition or to some stationary part, allowing the pulley 21 on the lever17 to run loosely in the loop of the connection 81 to produce anincreased motion of the needle-bar, as above described.

Having thus described my invention, What I claim as new, and desire tosecure by Letters Patent, is-

1. In a lappet-loom, two rotary patternsurfaces, provided withelevations of varying heights, two levers, one for each pattern-surface,a needle-bar, a connection intermediate said levers and said bar, tocommunicate to said bar a longitudinal niovementequal to the combinedmovements produced by said levers, substantially as shown and described.

2. In a lappet-loom, two rotary patternsurfaces, provided withelevations of varying heights, a lever for each pattern-surface, aneedle-bar, a connection from said bar to both of said levers, saidconnection adapted to be moved by either, or both of said levers, to

give a longitudinal motion to the needle-bar, substantially as shown anddescribed.

3. In a lappet-loom, two rotary patternsurfaces, provided withelevations of varying heights, a lever for each pattern-surface, apulley on one of said levers, a needle-bar, a connection from said barto both of said levers, said connection loosely looped around saidpulley on one of said levers, and adapted to be moved by either, or bothof said levers, to give a longitudinal motion to the needlebar,substantially as shown and described.

H. LEDOUX.

W'itnesses:

M. HAAS, J. G. DEWEY.

